Locking mechanism for elevators.



PATENTED JAN. 30, 1906,

No. 811,427. y

J. s. MUGKL. LOCKING MEGHANISM POR ELEVATORS.

APPLIOATIUN FILED OGT 28. 1904.

Y .m i.

UNITED STATES PATENT OFFICE.

' LJOHN S. MUCKL, OF PHILADELPHIA, PENNSYLVANIA. ASSIGNOR TO STANDARD ELEVATOR INTERLOCK COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OFy PENNSYLVANIA.

Specification of Letters Patent.

Patented Jan. 30, 1906.

Application filed 0ctober28, 1904. lSerial No. 230,357.

To all whom it may concern: Beit known that I, JOHN S. MUCKL, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvementsl in Lookin Mechanism for Elevators, of which the folPo cation.

g-doors of elevators and for locking'they operating mechanism-of the elevator.

The object of my invention is to dispense with any mechanism within the car or1n fact, above the floor of the car, and to so design the mechanism that it can bemountedl under the car and directly coupled to the door-releasing device. y s

Referring to the accompanying drawings, Figure 1 is a sectional elevation of sufficient of an elevator-car to illustrate my invention. Fig. 2 is a sectional plan view on the line 2 2, Fig. 1; and Fig. 3v is a sectional elevation able bearin s under the floor of the car is an o erating-s aft B. To this shaft is attached t e operating-lever B in the ordinary manner, or the shaft may be geared to an operatin -wheel, if desired.

he means for operating the shaft and the means for transmitting the motion' from the shaft' to the valve mechanism or other oo ntrolling mechanism in the basement of the building forms no part of my present inven-l tion.

C is a frame having a plate c, whichis bolted or otherwise secured to .the'under side of the elevator-car. This frame .has J. bearing c', through which the shaft B passes,I and on one side of theframe is a train of plain gears, and on the opposite side is a train of elliptical gears.

Secured to the shaft B is a segment D. The. teeth of this 'segment mesh with the teeth of a pinion d on a. stud E, rejecting from the frame C. Secured to the ub of the pinion d -is a gear-wheel d', which meshes in turn with a pinion e, secured to a shaft F, having its bearings in the frame C and carryL ing at its opposite end and on the opposite side of the frame an eccentric gear-wheelG which meshes'with a second eccentric gear-wheel H,

wing is a specifif` v cured to the under side of t e car.

My invention relates to certain improve-` ments in mechanism for releasing the land' carried by a stud H', projecting from the frame C. The eccentric gear-Wheel H." has a pin h, to which is attached a connectin -rodL which is-adjustably secured to -a head having a block fi, through which passes a pin m on a plunger M, mounted in a uide-plate N, se-

All the above-described mechanism is situated under the body of the car and being simple and compact cannot readily be ldisarranged and cannot be tampered with by any one within the car. f

The 4pl er M has a roller m in the present .instance w ch is arranged to act upon a latch s, pivoted to a late secured to the wall of the elevator we l. This latch engages with a projection on the landing-door S when the said door is in its closed osition and locks the door. `On one side ofp the plunger M is a flange m', and pivoted to the plate on the wall of the elevator-well is a locki -lever s', which en ages the flange m of the p unger as soon as e door is opened.

The locking-ll lever is weighted and is held out of the pat ofthe plunger by the door when it is in its closed position. This particular doonlocking mechanism is illustrated in the patent granted to me on the 20th'day' of September, 1904, No. 770,601, and therefore needs no further detailed description; j

In order that the plun er may be reversed to fit right or left hand oors, it is provided jwith a flange m2 at the rear similar to the flange m', and when the plunger is reversed this flange will be in proper position to be engaged by the locking-lever s.

The type of plunger illustrated forms no part of my present lnvention, as it is set forth in the patentgranted to me on the 1 lthday of April, 1905, o. 787,208.

While I ,have shown the mechanism at- 'tacheddirectly to the operating-shaft of the controlling means, the shaft sliown may in some instances be geared to the operating shaft where it is not desirable or possible to make a direct connection, and in some 'instances the se ment D may mesh directly with a gear on t e shaft F.

The operation of the device is as follows:

When the operator moves the lever to a cen- 4tral position, if a lever is used, the car is brought to a standstill, and if the floor ofthe caf is at a landing the plunger is forced out by the movement of the segment, The lain Y and ellipticalgearing'willaetuate the oorlockin lever s andv allow the door S to be opens eitheriby power or automatic means,

and -as sopnas the door is opened a lockinglever s on the elevator-Well will immediately engage the angezon the plunger and revent its Withdrawal, and consequently-will ook the operating-lever. in its central position.Y In --order to release-the lever, the elevator-door S will have to be closed. This closing of vthe elevator-door shifts the plunger-locking lever s,.and by moving the operating-lever toj the ri ht' c1'l left', according tothe directiony in Wich the'car is to be moved, the plunger is 'withdrawnfrom the door-locking lever'sandl the door is immediately locked and held-in its closed position until the car is again at 'the' landing.

' Well, substantie 2. The combination in a door locking v mechanism for elevators, of a plunger monntfl f controlling l claim` as my invention-e.-

1. The combination in door-locking mech anism for elevators, of a plun er mounted un der the ioor o a car, asha t under' the car and controlling the operating mechanism ofthe carfgearln'g m'ounterlunder the car and connecting the shaft with the plunger, and a door-lock and a plunger-lock on the elevator by the plunger', substantially asdescribe '3. The combination of an elevator-ear',y a'

arrllfgnd'to begactated s'ta'ntially as described..

plunger, en operatingshaft=for the controle;

ang;mechanism and a frame,v all'imonnted .une

der the ioo'rl of the car, gears' carried by the frame,'f a 'rodi connecting the said gearing to theplengeri-asegment on the operating# shaft`-mesliing. with the said gearing., and

y as described.

by the plunger, Si1b-A e. The combination oi an elevator-ear, a ramesecnred to the car under the door there-r vplain ears on the opposite side ofthe frame, 3a sh t mounted cnthe iframe-a lain gear and anelliptical gear carried there y, an ope of, ellipticalv gears on one side of the rameanii Y instabiel.J In vtestimony whereof I have signed my erating-shaft mounted in bearings under the floor of the car, means for operatingl the said shatto start and stop theoar, a segment on said shaft meshing with the vplain gears, a plunger, a slide therefor, a rod connecting the lunger with one. of the elliptical gears, and a oor-locking device actuated by the, plunger,

substantially as described.

5. The combination of an elevator-car, a frame secured to the under side of the car, anoperatmg-shat'fcr controlling the startin and stopping ofthe car, a bearing for sai I shaft carriedby the frame, a segment on the shaft, a-pinion carried by a stud on the frame, a gear-wheel mounted on the hub Vof the pin# fion, a shaft having its bearings in .the said frame, apinicn carried bythe shatnnd mesh'- ingwith the geen-wheel, an elliptica at. Wheel mounted'on the o posite end c' the shaft, a second studA ont e frame, a'. second elliptical gear-wheel on said law-mentioned stud and. meshingv with theirst elliptical gear-Wheel, a lpin on the second ellipticai genn- Wheel,l afplnngena'rod connec the plungerv with the in on the secendel 'pticl gear v Wheel, an a-doorelocking dev ic'efactuated by lthe plunger, substantially-v as described. l

6.. The combination'in means for releasing a landing-door ivhen the eleva or-car is at the lending' and, .lockingl the oper ting. mechanism when the door 1sv opened, of' elevatorcar,aframe `secured to the under side of the cangeringscarried by` said frame, an operat aft a o unxierzthefbottom-sf the car, a segmental arm on theshaft meshing with the gearing on theframe, a'plun'ger mounted on the underside of the car and connected tothe gearing',"an operating-lever connected to the .operatmgesbafa v iock therefor arran eri-to be actuated by the plunger, and a; loc ori-the wall eff-the .eles vater-Well arran ed to engage the plunger when 'the said-'p lingerie proieeted and the door is of'pened, whereby the operating mechanism otheear is locked, substantially a8- name to this speciication in the presence of two subscribing witnesses.

an elevator-landing door, a 

